﻿// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#if DEBUG

using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using AvaloniaEdit.Highlighting;
using ICSharpCode.Decompiler;
using ICSharpCode.ILSpy.TextView;
using ICSharpCode.ILSpy.TreeNodes;
using Microsoft.DiaSymReader.Tools;

namespace ICSharpCode.ILSpy
{
    [ExportMainMenuCommand(Menu = "_File", Header = "DEBUG -- Dump PDB as XML", MenuCategory = "Open", MenuOrder = 2.6)]
    sealed class Pdb2XmlCommand : SimpleCommand
    {
        public override bool CanExecute(object parameter)
        {
            var selectedNodes = MainWindow.Instance.SelectedNodes;
            return selectedNodes?.Any() == true
                && selectedNodes.All(n => n is AssemblyTreeNode asm && !asm.LoadedAssembly.HasLoadError);
        }

        public override void Execute(object parameter)
        {
            Execute(MainWindow.Instance.SelectedNodes.OfType<AssemblyTreeNode>());
        }

        internal static void Execute(IEnumerable<AssemblyTreeNode> nodes)
        {
            var highlighting = HighlightingManager.Instance.GetDefinitionByExtension(".xml");
            var options = PdbToXmlOptions.IncludeEmbeddedSources | PdbToXmlOptions.IncludeMethodSpans | PdbToXmlOptions.IncludeTokens;
            MainWindow.Instance.TextView.RunWithCancellation(ct => Task<AvaloniaEditTextOutput>.Factory.StartNew(() => {
                AvaloniaEditTextOutput output = new AvaloniaEditTextOutput();
                var writer = new TextOutputWriter(output);
                foreach (var node in nodes)
                {
                    string pdbFileName = Path.ChangeExtension(node.LoadedAssembly.FileName, ".pdb");
                    if (!File.Exists(pdbFileName)) continue;
                    using (var pdbStream = File.OpenRead(pdbFileName))
                    using (var peStream = File.OpenRead(node.LoadedAssembly.FileName))
                        PdbToXmlConverter.ToXml(writer, pdbStream, peStream, options);
                }
                return output;
            }, ct)).Then(output => MainWindow.Instance.TextView.ShowNodes(output, null, highlighting)).HandleExceptions();
        }
    }

    [ExportContextMenuEntry(Header = "DEBUG -- Dump PDB as XML")]
    class Pdb2XmlCommandContextMenuEntry : IContextMenuEntry
    {
        public void Execute(TextViewContext context)
        {
            Pdb2XmlCommand.Execute(context.SelectedTreeNodes.OfType<AssemblyTreeNode>());
        }

        public bool IsEnabled(TextViewContext context) => true;

        public bool IsVisible(TextViewContext context)
        {
            var selectedNodes = context.SelectedTreeNodes;
            return selectedNodes?.Any() == true
                && selectedNodes.All(n => n is AssemblyTreeNode asm && !asm.LoadedAssembly.HasLoadError);
        }
    }

}

#endif